Please make these cmssw specific containers available via unpacked.

• cmssw/cc7:latest : This contain CMSSW CentOS7 build time environment. Used by CMSSW Release and Integration builds.
• cmssw/slc6:latest : This contain CMSSW SLc6 build time environment. Used by CMSSW Release and Integration builds.
• cmssw/slc7-installer:latest : Same as cmssw/cc7 but contain only the env needed for installing CMSSW SW.
• cmssw/cms:rhel7 : This provides CMSSW runtime EL7 environment for grid jobs
• cmssw/cms:rhel6 : This provides CMSSW runtime EL6 environment for grid jobs